David Beckham and Victoria Beckham share first photos of daughter Harper Seven

(CBS) David and Victoria Beckham have introduced their newborn daughter, Harper Seven Beckham, to the world.

The soccer star and the former Spice Girl each posted a photo of the other holding their baby girl on Facebook and Twitter on Sunday. (Scroll down for the other photo).

Pictures: Celebrity babies
Pictures: Posh and Becks
Pictures: Victoria Beckham

"Daddy's little girl!" Victoria, 37, tweeted alongside a photo of her husband touching noses with their daughter. David, 36, posted an image on his Facebook page of Victoria and Harper with the message, "I took this picture of my two girls sleeping."

Harper Seven was born on July 10 in Los Angeles, joining big brothers Brooklyn, 12, Romeo, 8, and Cruz, 6.

The baby girl also made her debut on her dad's soccer cleats. On Saturday, Beckham shared a photo on his Facebook page of pink and white shoes with the names of his children stitched in.

The Los Angeles Galaxy player also explained the meaning behind Harper Seven's name in a video posted on Facebook.

"A lot of thought goes into our children's names and Harper was a name that we've loved for a long time for a couple of reasons," he said, according to the U.K.'s Daily Mail. "One reason is Harper's an old English name which we loved and one of the other reasons was Victoria's favorite book is 'To Kill a Mockingbird' and the author was Harper Lee. It's a very strong, passionate book. That's where Harper came from."

"Having a daughter is a whole new thing," he added. "Having pink in the house, having lilac in the house... and you have to be a lot more delicate with girls than boys and I'm not used to that so it's a whole new experience."